[Solution] New Car Mileage Ratings. Listed below are combined city-highway fuel economy rates (in mi/gal) for different cars. The old ratings are based
Question: New Car Mileage Ratings. Listed below are combined city-highway fuel economy rates (in mi/gal) for different cars. The old ratings are based on tests used before 2008 and the new ratings are basal on tests that went into effect in 2008. Is there sufficient evidence to conclude that there is a linear correlation between die old ratings and the new ratings?
| Old | New |
| 16 | 15 |
| 27 | 24 |
| 17 | 15 |
| 33 | 29 |
| 28 | 25 |
| 24 | 22 |
| 18 | 16 |
| 22 | 20 |
| 20 | 18 |
| 29 | 26 |
| 21 | 19 |
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